Our KR-87 ADF Systems come with a 12 foot antenna cable. Please note that we can order longer cables as an extra-cost option.

We have some KR-87s that are available (at extra cost) with a Superflag output. This makes the KR-87 compatible with an EFIS display.

The King KR-87 System is widely regarded as one of the best ADFs you can buy. This Silver Crown ADF System matches the rest of your King radio stack in both performance and appearance. This package includes everything that is needed to add this quality ADF to your aircraft.

There are three main components to this system:

King KR-87 ADF Receiver

The KR-87's job is to tune in distant NDB stations. One innovation that improves this performance is King's Coherent Detection circuitry. The KR-87 uses this circuitry for better range, a cleaner signal, and less interference.

The standard "-00" version of the KI-227 (shown here) uses a knob for manually rotating the compass card to match your current heading.

The KI-227 features:

Single ADF Needle

Glass lens

King KA-44B ADF Antenna

The KA-44B works as both a loop antenna and a sense antenna. There is no need to hang an unattractive and drag-producing long wire antenna on your aircraft. The KR-87 System is also available with a KA-44 antenna. This antenna is identical in function, but its blade shape and belly location make the KA-44B a better choice for most installations.

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